人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
20期
80-84
,共5页
范五一%梁仁强%陈浩%王翔
範五一%樑仁彊%陳浩%王翔
범오일%량인강%진호%왕상
高拱坝%温度控制%防裂措施%乌东德水电站
高拱壩%溫度控製%防裂措施%烏東德水電站
고공패%온도공제%방렬조시%오동덕수전참
high arch dam%temperature control%anti-crack measure%Wudongde Hydropower Station
针对乌东德地区的气候和大坝坝体结构特点,按高拱坝全坝段全约束的温控理念,对乌东德拱坝的基础允许温差和混凝土内外温差引起的温度应力进行了计算分析。根据计算结果并参考同类工程经验,确定了大坝各部位混凝土允许最高温度控制标准。提出了出机口温度、浇筑温度、浇筑季节和浇筑层厚、通水冷却和表面保温等各个环节的温控措施和要求。
針對烏東德地區的氣候和大壩壩體結構特點,按高拱壩全壩段全約束的溫控理唸,對烏東德拱壩的基礎允許溫差和混凝土內外溫差引起的溫度應力進行瞭計算分析。根據計算結果併參攷同類工程經驗,確定瞭大壩各部位混凝土允許最高溫度控製標準。提齣瞭齣機口溫度、澆築溫度、澆築季節和澆築層厚、通水冷卻和錶麵保溫等各箇環節的溫控措施和要求。
침대오동덕지구적기후화대패패체결구특점,안고공패전패단전약속적온공이념,대오동덕공패적기출윤허온차화혼응토내외온차인기적온도응력진행료계산분석。근거계산결과병삼고동류공정경험,학정료대패각부위혼응토윤허최고온도공제표준。제출료출궤구온도、요축온도、요축계절화요축층후、통수냉각화표면보온등각개배절적온공조시화요구。
In view of the characteristics of the dam structure and the climate in Wudongde area, and according to the concept of whole-constrain temperature control for whole dam body, the temperature stress induced by the permissible temperature differ-ence of dam foundation and the concrete internal and external temperature difference of Wudongde Dam are calculated. Through referring to the calculation results and engineering experiences of similar projects, the control standard for maximum allowable temperature of all concrete parts of the dam is determined. The temperature control measures and requirements for concrete tem-perature at outlet of mixer, placing temperature, placing season, lift thick, water cooling and surface temperature insulation are put forward.